The Cactus Roulette Endurance Event returns to Lawrence, Kansas on January 23rd through the 24th of 2027, bringing together endurance runners for a unique trail race experience. Base camp for this event is at Coneflower Campground within Clinton Lake State Park, where participants will find all necessary amenities including food and water stations, porta potties, heaters, and personal drop bag access. On the morning of January 23rd, the trails around Lawrence will be marked with three distinct loops ranging from 1.9 to 3.6 miles in length, each offering varying degrees of technical difficulty and elevation changes. The trail conditions are expected to be firm but slightly soft underfoot, providing a challenging yet manageable surface for runners who may encounter the roulette wheel's whims throughout their journey. Cactus Roulette has been an annual event since its inception by the Lawrence Trail Hawks, attracting endurance athletes from across Kansas and beyond. Each year sees new participants join alongside dedicated veterans, all united in the spirit of pushing personal limits on the trails around Clinton Lake State Park. The race offers a range of time options—24 hours, 12-hour Owl (Saturday afternoon), 12-hour Lark (Sunday morning), and a 6-hour option—that cater to both seasoned ultrarunners and those looking for their first taste of long-distance trail running. The course features three color-coded loops: SWIM BEACH in blue, CACTUS RIDGE in green, and BUNKER HILL in red. Each loop presents unique challenges with varying terrain and elevation changes that keep runners engaged throughout the event duration. Runners will start at specific mats corresponding to their chosen time option, ensuring a smooth transition from one loop to another as dictated by the roulette wheel. Weather conditions for January typically feature firm but slightly soft trail surfaces in Lawrence. UV index levels are expected to be low during race hours, offering runners comfortable daylight exposure without excessive sun exposure risks. Temperatures will likely range between mild and cool throughout both days of competition, with wind speeds generally light enough not to hinder performance significantly.
Registration for the Cactus Roulette Endurance Event can be completed at https://ultrasignup.com/register.aspx?did=135411 where fees are set at $223.00 for 24 hours, and $163.00 each for both the 12-hour Owl and Lark options; while a shorter but still challenging option is available at $103.00 for 6 hours. Packet pick-up details vary by time block: runners participating in all durations can collect packets between 9 am to 11 am on January 23rd, with additional opportunities provided closer to each specific start time. Pacers and support crew members are welcome for the full marathon event after midnight until noon of race day. Participants should plan accordingly based on their chosen distance's requirements regarding age restrictions (minimum age varies by option) and equipment needs such as hydration packs or personal drop bags that can be stored at base camp during competition hours. The Cactus Roulette Endurance Event in Lawrence, Kansas from January 23rd to the 24th of 2027 is a testament to local endurance spirit and community support. With its unique roulette wheel format and diverse loop options across varying terrains, it remains an unmissable challenge for serious trail runners seeking both adventure and camaraderie on the trails around Clinton Lake State Park.
Races Offered
12 Hour Owl
Jan 23, 2027
straighten
Distance —
12 Hours
terrain
Type —
Running
timer
12:00
sell
$163.00
24 Hour
Jan 23, 2027
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Distance —
24 Hours
terrain
Type —
Running
timer
12:00
sell
$223.00
12 Hour Lark
Jan 24, 2027
straighten
Distance —
12 Hours
terrain
Type —
Running
timer
00:01
sell
$163.00
6 Hour
Jan 24, 2027
straighten
Distance —
6 Hours
terrain
Type —
Running
timer
06:00
sell
$103.00
Weather History
These values represent the 3-year monthly averages for January in Lawrence.
thermostatTemperature
-6.1° / 2.6°
wb_sunnyFeels like
-11.1° / -2.0°
light_mode
Avg sunshine hours
6h 19m
water_drop
Avg rainfall
1.9 mm
ac_unit
Avg snowfall
0.6 cm
air
Avg wind speed
11.7 km/h (Light breeze)
opacity
Sweat loss rate
Low
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Low (2.0)
humidity_mid
Humidity
73.4%
wb_twilight
Sunrise
08:35
nightlight
Sunset
18:23
About Lawrence
Learn more about the host city, Lawrence.
Lawrence is a city in Eastern Kansas, USA along I-70, 35 miles west of Kansas City, Kansas. It is home to the University of Kansas. Lawrence provides a mix of academics, bohemia, and small-town Kansas kitsch. It has been the setting of many movies and is a growing cultural hub in Kansas.